I’m from Russia, so I translated into English Google, sorry. I do not know what fashion is to blame. But he tried to show in the picture errors gates.
I could use the golden gates, but imagine the stove. How many things in it melted. In many Gate slots will not. I contacted the technical support mods BuildCraft, but there's nothing good is said and like all piled on developers mods IndustrialCraft. So who is to blame? Because of this it is impossible to move to 1.5.2. Here's a link to the topic at support BuuildCraft.
http://www.mod-buildcraft.com/…topic/error-in-the-gates/
Thanks!
P.S. On version 1.4.7 everything worked. And depended on which side you put the pipe.